ZA72991B - Improvements in or relating to railway signalling apparatus and systems - Google Patents

Improvements in or relating to railway signalling apparatus and systems

Info

Publication number
ZA72991B
ZA72991B ZA720991A ZA72991A ZA72991B ZA 72991 B ZA72991 B ZA 72991B ZA 720991 A ZA720991 A ZA 720991A ZA 72991 A ZA72991 A ZA 72991A ZA 72991 B ZA72991 B ZA 72991B
Authority
ZA
South Africa
Prior art keywords
relating
systems
signalling apparatus
railway signalling
railway
Prior art date
Application number
ZA720991A
Inventor
G Foster
D Stratton
Original Assignee
Gec General Signal Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gec General Signal Ltd filed Critical Gec General Signal Ltd
Publication of ZA72991B publication Critical patent/ZA72991B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/18—Railway track circuits
    • B61L1/181—Details
    • B61L1/187—Use of alternating current

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
ZA720991A 1971-02-23 1972-02-15 Improvements in or relating to railway signalling apparatus and systems ZA72991B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB523971 1971-02-23

Publications (1)

Publication Number Publication Date
ZA72991B true ZA72991B (en) 1972-10-25

Family

ID=9792332

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA720991A ZA72991B (en) 1971-02-23 1972-02-15 Improvements in or relating to railway signalling apparatus and systems

Country Status (4)

Country Link
AU (1) AU463306B2 (en)
GB (1) GB1326885A (en)
NL (1) NL7202017A (en)
ZA (1) ZA72991B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4304377A (en) * 1977-06-08 1981-12-08 Compagnie De Signaux Et D'entreprises Electriques Electrical block separating joints for railway signaling systems
DE2951124C2 (en) * 1979-12-19 1986-02-20 Standard Elektrik Lorenz Ag, 7000 Stuttgart Electrical separation joint for track circuits fed with alternating current in railway systems

Also Published As

Publication number Publication date
NL7202017A (en) 1972-08-25
GB1326885A (en) 1973-08-15
AU3913472A (en) 1973-08-23
AU463306B2 (en) 1975-07-02

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